Use System Restore to return Windows Vista to a point before the issue occurred. To do this, follow these steps:
Start Windows Vista in safe mode.
Click Start , click All Programs, click Accessories, click System Tools, and then click System Restore.
Follow the steps in the System Restore Wizard to return Windows Vista to a point before the issue occurred.
Perform a clean boot in Windows Vista. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
929135 How to troubleshoot a problem by performing a clean boot in Windows Vista
You may disable all the third-party programs. If the problem disappears, repetitively use the msconfig program to figure out which third-party program is causing the problem. Disable the program, or speak to the manufacturer about the problem.
For more information about Windows Genuine Advantage, visit the following Microsoft Web site:
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.